Here is a BIOS update for Inspiron 3721 (A06 version) You may download it from the link : 6232.3721A06.zip

Note: Make sure the ac adapter is connected and the battery is charged 10% or above to update the BIOS. Also, disconnect all the external peripherals before updating the BIOS. All the programs should be closed and documents saved.

Extract the driver --> Right click and 'Run as administrator' -- > Follow the prompts on screen to install the BIOS update.

This BIOS update is not web posted yet but will be updated on support website soon.

Please ensure that the vents of the system are clean and allow free circulation of air inside the system. You may use a can of compressed air to clean the vents. Before you clean the air vents of system:

I'm having the same issue with a Dell 3721 bought in January. The notebook is brand new. The fan is inacceptably loud. I've been trying to modify the advanced power Settings, specifically the Minimum and Maximum Levels for the CPU. I thought I found a combination that stopped the fan at least for normal browsing mode but now it's running again. Have you tried calling Dell? I set up the Notebook for my father-in-law today and will ask him to call Dell.

As far as I can see, there is not BIOS update available, as you mention. @Chinmay S: How can we let Dell know that this is a general issue? If it doesn't get better we'll have to return the Notebook.

Can anyone explain me what did you do with video dirvers for Win7? Currently, there is a driver for Win8 and my Win7 doesn't recognize it as a proper one. How did you solve this problem? Or everyone is exploiting Win8 here? Thanks.

I am having the same issues and found no solution yet for getting the fan noise down. I have received the dell 3721 today. I have used the dell support tool and updated some drives but that didn't solve it. I will give it 5 days and than I wil send the laptop back. Is there some one with the sollution?

I have the same problem. I have received my new Inspiron 17 yesterday, and the CPU fan is really noisy everytime, even if I do nothing... I think it's not normal. It seems to be a Bios problem with the CPU fan management...

I am still looking into this issue and will keep you posted with the details.

@ bosk802: You can try and install video driver in compatibility mode for Windows 7, that might work.

Download and Save the driver on desktop --> Right Click the driver installation file and select Properties/Compatibility Tab --> Select Windows 7 --> Click Apply/OK -- > Right Click the file and select the Run As Administrator option to install.

As most of you, i bought this laptop with Win8 installed, but i downgraded it to Win7. I faced problems with some device's drivers, but almost all of them were solved with drivers supplied for this laptop in support section of dell website. But there was no driver for video that will be applicable for Win7, resolution look awful, i thought it was some hardware-related problem. But i finally found driver by using dell website search engine:

I just wonder why this driver is not in the list, where it should be for Win7. Нou should fix this, Dell-guys.

And couple of words about the fan. I have no troubles with the fan now, using Win7 and, as i remember, i had no troubles with the fan when it was working under Win8 (but it was only 2 days). Under normal condition, without any load on CPU, i can hardly hear fan is spinning. Under greater load, for example, trying to estimate laptop performance using Windows-utility, fan is spinning faster. I cant tell its the maximum speed, i can hear it, but it seems to be normal and NOT very annoying. This was concerning fan noise.

I can tell some revision number or bios version of my laptop, if it helps. May be it's all about hardware failure of particular production batch?

Another way to check BIOS version is from system BIOS. You can check that by following steps below:

Restart the computer.

As soon as you see the Dell logo, start tapping the ‘F2’ key on top of the keyboard.

If you wait too long and the Microsoft Windows appears, then continue to wait until you see the Windows desktop. Now shutdown your computer and try again.

After this a new window would appear. You can only use the arrow keys of the keyboard to navigate between the options as the mouse is not functional in this mode.

Under Main tab, check the system BIOS version.

@ Vangelov/ chamilton2345/ Peter2013/ DavidP31:

You may download and install the updated version of BIOS (A05) for Inspiron 3721 (Released on 02/05/2013) from link: 2211.3721A05.zip

Note: Make sure the ac adapter is connected and the battery is charged 10% or above to update the BIOS. Also, disconnect all the external peripherals before updating the BIOS. All the programs should be closed and documents saved.

Download and extract the file. Double click on the set up file and follow the prompts to complete installation.

I still have my tiny vacuum cleaner on my desk, its main goal is not to allow above 40C while the processor could endure even 105C, when I tested on full load with prime95 on both cores (or 4 with that other threads or whatever) I received 62C with the same fan RPM

just to be exact: that U in the processor naming means "Ultra-low-voltage"